[Dell Latitude E5460] bluetooth is not supported on 16.04.1.

[Taihsiang Ho]

Dell Latitude E5460 (CID 201507-18776)

Ubuntu 16.04.1
(updated to kernel 4.4.0-45-generic)

[Steps to reproduce]
1. Install Ubuntu 16.04.1 via Live USB.
2. On desktop, open the terminal to issue the command to check the status[1].
3. Open Bluetooth setup window.
4. Update the system and do the same steps from 1~3.

[Expected Result]
Bluetooth setup window is ready for you to setup bluetooth devices.

[Actual Result]
The bluetooth setup window shows "Bluetooth is disabled".

[1]

ubuntu@201507-18776:~$ rfkill list
0: hci0: Bluetooth
 Soft blocked: no
 Hard blocked: no
1: dell-wifi: Wireless LAN
 Soft blocked: no
 Hard blocked: no
2: dell-bluetooth: Bluetooth
 Soft blocked: no
 Hard blocked: no
3: phy0: Wireless LAN
 Soft blocked: no
 Hard blocked: no

------------------------------------

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-45-generic 4.4.0-45.66
ProcVersionSignature: Ubuntu 4.4.0-45.66-generic 4.4.21
Uname: Linux 4.4.0-45-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: ubuntu 1523 F.... pulseaudio
CurrentDesktop: Unity
Date: Thu Nov 3 17:56:50 2016
HibernationDevice: RESUME=UUID=e104534d-b5db-4ef1-9955-2b8178924bcb
InstallationDate: Installed on 2016-11-02 (1 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
MachineType: Dell Inc. Latitude E5470
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-45-generic.efi.signed root=UUID=a02ea97e-ff66-470f-aa17-74a60670faa1 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-45-generic N/A
 linux-backports-modules-4.4.0-45-generic N/A
 linux-firmware 1.157.4
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/10/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.3.6
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.3.6:bd01/10/2016:svnDellInc.:pnLatitudeE5470:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E5470
dmi.sys.vendor: Dell Inc.

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream stable kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.4 stable kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.30

[Pilot6 (hanipouspilot)]

This is a firmware loading issue. The kernel looks for intel/ibt-11-4.sfi, but the linux-firmware has 11-5 and 11-16. It should be fixed in one place or the other.

[highvolt (highvolt16)]

I had the same issue, and used the sfi file from the windows version.
The main issue is that your card is revision 4 and the linux-firmware only has the firmware for revision 5.

You only need to decompress the file and copy the two files into /lib/firmware/intel and perform an hard reboot. And bluetooth should start working right away.

Anyone knows whats the best way to get these files pushed to mainline linux-firmware package?

[Pilot6 (hanipouspilot)]

You can send a patch to the

git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git

tree.